The authors explore the Avar language, which has not yet been sufficiently studied and is waiting for a detailed linguistic characterization by specialists. Following the scientific tradition of reconstruction of the protolanguage, this question is relevant for the Avar language: the language on which Avar is based is not historically attested, unlike in the case of French, whose development can be traced back over the centuries. Comparative study of Caucasian languages has become especially popular in recent years. The choice of French, one of the most scrutinized languages of global cultural significance, as the external etalon is explained not only by the lack of similar works in Avar linguistic literature but also by the fact that French linguists, who have long been researching Caucasian languages, particularly Avar, regrettably, neglect the comparative aspect of research.